$2000 I could see, but I do think more people are overspending on CPU for gaming PCs by probably double. Maybe not overspending if you're getting a tangible productive value out of it, but I suppose they didn't specify gaming. For gaming specifically I'd probably try and balance the useful GPU power I need with the minimum necessary CPU to prevent bottlenecking.
Part of the reason I haven't upgraded my intel macbook pro, is just because I think the cost all-in seems outrageous, even for someone who exclusively works on mac. I can't rationalize $500/16gb of ram or w/e. I haven't upgraded my gaming PC much, because the cost of GPUs very quickly overwhelms the performance improvement I'd get value out of compared to my severely out of date gear that I found by the roadside.
You could easily add another $1K by going crazy with RAM and NVME storage.